Quantum Dot Passively Mode-Locked Laser Optimization for High-Power and Short Pulses

Author

Xu, Tianhong ; Bardella, Paolo ; Montrosset, Ivo

Author_Institution

Dipt. di Elettron. e Telecomun., Politec. di Torino, Turin, Italy

Volume

25

Issue

1

fYear

2013

fDate

Jan.1, 2013

Firstpage

63

Lastpage

66

Abstract

The performance optimization of monolithic two-section passively mode-locked quantum-dot lasers is investigated using the finite-difference traveling-wave model changing simultaneously the length of the saturable absorber and the cavity reflectivity. We demonstrate that, by properly choosing these two parameters, a reduction in the pulse width from 4.4 ps to 930 fs and an increase in the product of the peak power and the average power from 0.012 to 0.2 W² were obtained. In addition, clear trends and design guidelines are extracted from the simulation results and explained.

Keywords

finite difference methods; high-speed optical techniques; laser cavity resonators; laser mode locking; optical saturable absorption; quantum dot lasers; cavity reflectivity; finite-difference traveling-wave model; high-power pulse; monolithic two-section passively mode-locked lasers; performance optimization; quantum-dot lasers; saturable absorber; short pulse; Absorption; Cavity resonators; Laser mode locking; Mathematical model; Quantum dot lasers; Reflectivity; Mode-locked lasers (MLLs); modeling; quantum dots (QDs); semiconductor lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2012.2227956

Filename

6355614